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The Single UNIX &reg; Specification, Version 2<br>
Copyright &copy; 1997 The Open Group

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<h4><a name = "tag_001_014_2866">&nbsp;</a>NAME</h4><blockquote>
what - identify SCCS files (<b>DEVELOPMENT</b>)
</blockquote><h4><a name = "tag_001_014_2867">&nbsp;</a>SYNOPSIS</h4><blockquote>
<pre><code>

what <b>[</b>-s<b>] </b><i>file</i>...
</code>
</pre>
</blockquote><h4><a name = "tag_001_014_2868">&nbsp;</a>DESCRIPTION</h4><blockquote>
The
<i>what</i>
utility searches the given files for all occurrences of the pattern that
<i><a href="get.html">get</a></i>
(see
<i><a href="get.html">get</a></i>)
substitutes for
<b>%Z%</b>
(@(#))
and writes to standard output what follows until the first occurrence
of one of the following:
<pre>
<code>
"   &gt;   newline   \   NUL
</code>
</pre>
</blockquote><h4><a name = "tag_001_014_2869">&nbsp;</a>OPTIONS</h4><blockquote>
The
<i>what</i>
utility supports the <b>XBD</b> specification, <a href="../xbd/utilconv.html#usg"><b>Utility Syntax Guidelines</b>&nbsp;</a> .
The following option is supported:
<dl compact>

<dt><b>-s</b>
<dd>Quit after finding the first occurrence of the pattern in each file.

</dl>
</blockquote><h4><a name = "tag_001_014_2870">&nbsp;</a>OPERANDS</h4><blockquote>
The following operands are supported:
<dl compact>

<dt><i>file</i><dd>A pathname of a file to search.

</dl>
</blockquote><h4><a name = "tag_001_014_2871">&nbsp;</a>STDIN</h4><blockquote>
Not used.
</blockquote><h4><a name = "tag_001_014_2872">&nbsp;</a>INPUT FILES</h4><blockquote>
The input files are of any file type.
</blockquote><h4><a name = "tag_001_014_2873">&nbsp;</a>ENVIRONMENT VARIABLES</h4><blockquote>
The following environment variables affect the execution of
<i>what</i>:
<dl compact>

<dt><i>LANG</i><dd>Provide a default value for the internationalisation variables
that are unset or null.
If
<i>LANG</i>
is unset or null, the corresponding value from the
implementation-dependent default locale will be used.
If any of the internationalisation variables contains an invalid setting, the
utility will behave as if none of the variables had been defined.

<dt><i>LC_ALL</i><dd>
If set to a non-empty string value,
override the values of all the other internationalisation variables.

<dt><i>LC_CTYPE</i><dd>
Determine the
locale for the interpretation of sequences of bytes of text data as
characters (for example, single- as opposed to multi-byte characters
in arguments and input files).

<dt><i>LC_MESSAGES</i><dd>
Determine the locale that should be used to affect
the format and contents of diagnostic
messages written to standard error.

<dt><i>NLSPATH</i><dd>
Determine the location of message catalogues
for the processing of
<i>LC_MESSAGES .
</i>
</dl>
</blockquote><h4><a name = "tag_001_014_2874">&nbsp;</a>ASYNCHRONOUS EVENTS</h4><blockquote>
Default.
<br>
</blockquote><h4><a name = "tag_001_014_2875">&nbsp;</a>STDOUT</h4><blockquote>
The standard output consists of the following for each
<i>file</i>
operand:
<p><code>
<tt>"%s:\n\t%s\n"</tt>, &lt;<i>pathname</i>&gt;,
&lt;<i>identification&nbsp;string</i>&gt;
</code>
</blockquote><h4><a name = "tag_001_014_2876">&nbsp;</a>STDERR</h4><blockquote>
Used only for diagnostic messages.
</blockquote><h4><a name = "tag_001_014_2877">&nbsp;</a>OUTPUT FILES</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_2878">&nbsp;</a>EXTENDED DESCRIPTION</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_2879">&nbsp;</a>EXIT STATUS</h4><blockquote>
The following exit values are returned:
<dl compact>

<dt>0<dd>Any matches were found.

<dt>1<dd>Otherwise.

</dl>
</blockquote><h4><a name = "tag_001_014_2880">&nbsp;</a>CONSEQUENCES OF ERRORS</h4><blockquote>
Default.
</blockquote><h4><a name = "tag_001_014_2881">&nbsp;</a>APPLICATION USAGE</h4><blockquote>
The
<i>what</i>
utility
is intended to be used in conjunction with the SCCS command
<i><a href="get.html">get</a></i>,
which automatically inserts identifying information,
but it can also be used where the information is inserted
by any other means.
<p>
When the string "@(#)" is included
in a library routine in a shared library, it might not be found in an
<b>a.out</b>
file using that library routine.
</blockquote><h4><a name = "tag_001_014_2882">&nbsp;</a>EXAMPLES</h4><blockquote>
If the C-language program in file
<b>f.c</b>
contains:
<pre>
<code>
char ident[] = "@(#)identification information";
</code>
</pre>
<p>
<p>
and
<b>f.c</b>
is compiled to yield
<b>f.o</b>
and
<b>a.out</b>
then the command:
<pre>
<code>
what f.c f.o a.out
</code>
</pre>
<p>
will write:
<pre>
<code>
f.c:
    identification information
    ...
f.o:
    identification information
    ...
a.out:
    identification information
    ...
</code>
</pre>
</blockquote><h4><a name = "tag_001_014_2883">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_2884">&nbsp;</a>SEE ALSO</h4><blockquote>
<i><a href="get.html">get</a></i>.
<br>
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Copyright &copy; 1997 The Open Group
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